I know this is an old post but I thought I would add our info from a couple years ago. We did St. Vincent and the Grenadines in 2010 but are returning to the BVIs for St. Patty's day in 2013.

And I just received my packet from Ed Hamilton.

We liked the following:
The caves(Norman)
The baths(go early in the morning and pickup a mooring near the cove)
Foxy's Taboo(Little Jost)
One love bar(Jost)
Ivans(Jost)
Willy Ts and Pirate Cove(Norman)

Next time will likely skip:
Cooper I
Anagada

Next time will try to get to:
Cane Garden Bay
Foxy's(although we met Foxy through a local we hung out with)

You will not have time to go to Anagada but it isn't that special. We enjoyed the snorkeling and dinner but it is a flat sandy island unlike the rest of the islands.